#define  _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>
#include<stdio.h>
int strlen(char* s)
{
	int sz = 0;
	while (1)
	{
		if (*s != '\0')
		{
			s++;
			sz++;
		}
		else
		return sz;
	}
}
int main()
{
	char arr[] = "abcdefgh";
	int ret = strlen(arr);
	printf("%d", ret);
	return 0;
}